I purchased years ago from multigenerational estate of PRR family which had South Altoona foundry ties. It's stamped on top with some small letters stamps look like p & s on bottom also. I was told it was babbit by family but that's just oral history. Weighs 2.7 lbs. I will be listing some unique RR items in coming weeks. These were dated from late 1930s to 1940's.
